12120222122221 has 8 divisors (see below), whose sum is σ = 12763217554560. Its totient is φ = 11486895794352.

The previous prime is 12120222122219. The next prime is 12120222122251. The reversal of 12120222122221 is 12222122202121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12120222122221 - 2¹ = 12120222122219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12120222122192 and 12120222122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120222122251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2417273545 + ... + 2417278558.

It is an arithmetic number, because the mean of its divisors is an integer number (1595402194320).

Almost surely, 2^{12120222122221} is an apocalyptic number.

It is an amenable number.

12120222122221 is a deficient number, since it is larger than the sum of its proper divisors (642995432339).

12120222122221 is a wasteful number, since it uses less digits than its factorization.

12120222122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834552235.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12120222122221 its reverse (12222122202121), we get a palindrome (24342344324342).

The spelling of 12120222122221 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".